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Sep 21, 2022 · A combination reaction is a reaction in which two or more substances combine to form a single new substance. Combination reactions can also be called synthesis reactions. The general form of a combination reaction is: A + B → AB A + B → AB. One combination reaction is two elements combining to form a compound.
- Decomposition Reactions
A decomposition reaction is a reaction in which a compound...
- Decomposition Reactions
Compounds. A compound is a substance that contains two or more elements chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds. One of the simplest is called methane, in which there are always four times as many hydrogen atoms as carbon atoms. Methane is a pure substance because it ...
close. compound A pure substance made from two or more elements which are chemically bonded in a fixed ratio. and. mixtures. close. mixture When two or more compounds or elements are present ...
Jul 20, 2022 · For example, water is a compound composed of two hydrogen atoms bonded to one oxygen atom. We can show the ratio of hydrogen to oxygen in this compound by using subscripts on the chemical symbols for each element. Thus, water (two hydrogens and one oxygen) can be written as H 2 O. This shorthand notation for water is called a chemical formula.
As it stands, this is what I understand them to mean: Compound: two or more different atoms bonded together. Mixture: two or more different atoms together but not joined. Molecule: two particles (same or different) bonded together. Element: only 1 type of atom; this definition is applied to things both bonded and not to itself.
A mole is a measure of chemical substances. There are 602,300 million trillion (6.023 x 10 23) atoms or molecules in one mole. A mole of any two elements with have a different mass, but the same number of particles. If you look up gold (Au) on a periodic table, you’ll see it has an atomic mass of 107.9.
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Jun 19, 2021 · Mixture - A mixture is when we have elements or compounds in a container or space and they are not bonded together. This means they are not joined and have not swapped or shared electrons. Instead they do not react together but mix and move around each other. An example of this is air in the classroom. This air is a mixture of oxygen, carbon ...
